CPWD Delhi Schedule Of Rates(Vol. 2)
Code No.DescriptionUnitRate(  )
 26.26 Providing & fixing false ceiling at all heights with GRG (Glass Fibre Reinforced Gypsum) false ceiling tiles of Size 595x595 mm of approved texture, design and patterns having moisture content less than 2%, humidity resistance of 99%, NRC 0.50 to 0.75 as per IS 8225:1987, Non combustible as per BS 476 (part-4)-1970 and light reflectance of 85% (minimum) to be laid in true horizontal level suspended on inter-locking met al T-Grid of hot dipped galvanised iron section of 0.33mm thick (galvanized @ 120 grams per sqm including both sides) comprising of main-T runners of size 15x32 mm of length 3000 mm, cross - T of size 15x32 mm of length 1200 mm and secondary intermediate cross-T of size 15x32 mm of length 600mm to form grid module of size 600 x 600 mm, suspended from ceiling using galvanised mild steel items (galvanizing @ 80 grams per sqm) i.e. 50 mm long, 8 mm outer diameter M-6 dash fasteners, 6 mm dia fully threaded hanger rod upto 1000 mm length and L-shape level adjuster of size 85x25x2 mm. Galvanised iron perimeter wall angle of size 24x24x0.40 mm of length 3000 mm to be fixed on periphery wall / partition with the help of plastic rawl plugs at 450 mm center to center and 40 mm long dry wall SS screws. The work shall be carried out as per specifications, drawing and as per directions of Engineer-in-Charge. 

   
  26.26.1 With semi perforated 12 mm thick micro tegular edged GRG false ceiling tiles. sqm 1352.90
  26.26.2 With fully perforated 12 mm thick micro tegular edged or 10 mm thick square edged GRG false ceiling tiles. sqm 1452.90
Analysis of Rates for Delhi (Vol. 2) 2016
26.26Providing & fixing false ceiling at all heights with GRG (Glass Fibre Reinforced Gypsum) false ceiling tiles of Size 595x595 mm of approved texture, design and patterns having moisture content less than 2%, humidity resistance of 99%, NRC0.50 to 0.75 as per IS 8225:1987, Non combustible as per BS 476 (part 4)-1970 and light reflectance of 85% (minimum) to be laid in true horizontal level suspended on inter-locking metal T-Grid of hot dipped galvanised iron section of 0.33mm thick (galvanized @ 120 grams per sqm including both sides) comprising of main-T runners of size 15x32 mm of length 3000 mm, cross - T of size 15x32 mm of length 1200 mm and secondary intermediate cross-T of size 15x32 mm of length 600mm to form grid module of size 600 x 600 mm, suspended from ceiling using galvanised mild steel items (galvanizing @ 80 grams per sqm) i.e. 50 mm long, 8 mm outer diameter M-6 dash fasteners, 6 mm dia fully threaded hanger rod upto 1000 mm length and L-shape level adjuster of size 85x25x2 mm. Galvanised iron perimeter wall angle of size 24x24x0.40 mm of length 3000 mm to be fixed on periphery wall / partition with the help of plastic rawl plugs at 450 mm center to center and 40 mm long dry wall wood screws. The work shall be carried out as per specifications, drawing and as per directions of the Engineer-in-Charge.
26.26.1With semi perforated 12 mm thick micro tegular edged GRG false ceiling tiles.
Code No.DescriptionUnitQuantityRate( )Amount( )
  Details of cost for 100 sqm
MATERIAL
Celling area =100 sqm
Add wastage @ 5% = 5 sqm
Total=105.00 sqm
       
 8581 12 mm thick micro tegular edged semi perforated GFRG (Glass Fibre Reinforced Gypsum) false celing tiles of Size 595x 595 mm  sqm 105.00  624.00 65520.00
 8555 Galvanized iron main-T ceiling sections 15x32x0.33 mm (3000 mm long)
Including wastage @ 10%
 each 29.50  177.00 5221.50
 8591 Galvanized iron perimeter wall angle
24x24x0.40  mm  (3000  mm  long)
Including wastage @ 10%
 each 13.50  63.00 850.00
 8556 Galvanized  iron  intermediate  cross-
T section  15x32x0.33  mm  (1200  mm  long)
Including wastage @ 10%
 each 147.00  73.00 10731.00
 8587 Galvanized  iron  intermediate  cross-
T section  15x32x0.33  mm  (600  mm  long)
Including wastage @ 10%
 each 147.00  34.00 4998.00
 8588 Galavanised  MS  hanger  rod  6mm  dia  MS fully threaded up to 1000 mm length  each 72.00  25.00 1800.00
 8619 Galavanised  MS    L-shape  level  adjuster  of size  85x25x2  mm

 each 72.00  14.00 1008.00
 8596 Galvanised  MS  8mm  outer  diameter M-6 dash fastener  25mm long  each 72.00  31.00 2232.00
 8211 40mm SS with plastic rawl plugs  100 nos 1.00  208.00 208.00
 9999 Scaffolding etc.  L.S. 498.65  1.73 862.66
 9977 Carriage of materials etc.  L.S. 237.48  1.73 410.84
 9999 Sundries
LABOUR
 L.S. 310.70  1.73 537.51
 0111 Carpenter 1st class  day 28.00  487.00 13636.00
 0114 Beldar  day 23.00  368.00 8464.00
 

TOTAL
Add 1% Water charges
TOTAL
Add 15% Contractor's profit and overheads
Cost of 100 sqm
Cost of 1 sqm
Say

      116480.01
1164.80
117644.81
17646.72
135291.53
1352.92
1352.90
26.26.2With fully perforated 12 mm thick micro tegular edged or 10 mm thick square edged GRG false ceiling tiles.
Code No.DescriptionUnitQuantityRate( )Amount( )
  Details of cost for 100 sqm
MATERIAL
Celling area =100 sqm
Add wastage @ 5% = 5 sqm
Total=105.00 sqm
       
 8582 12 mm thick micro tegular edged fully perforated GFRG (Glass Fibre Reinforced Gypsum) false celing tiles of Size 595x595 mm  sqm 105.00  706.00 74130.00
 8555 Galvanized iron main-T ceiling sections 15x32x0.33 mm (3000 mm long)
Including wastage @ 10%
 each 29.50  177.00 5221.50
 8591 Galvanized iron perimeter wall angle
24x24x0.40  mm  (3000  mm  long)
Including wastage @ 10%
 each 13.50  63.00 850.00
 8556 Galvanized  iron  intermediate  cross-
T section  15x32x0.33  mm  (1200  mm  long)
Including wastage @ 10%
 each 147.00  73.00 10731.00
 8587 Galvanized  iron  intermediate  cross-
T section  15x32x0.33  mm  (600  mm  long)
Including wastage @ 10%
 each 147.00  34.00 4998.00
 8588 Galavanised  MS  hanger  rod  6mm  dia  MS fully threaded up to 1000 mm length  each 72.00  25.00 1800.00
 8619 Galavanised  MS    L-shape  level  adjuster  of size  85x25x2  mm

 each 72.00  14.00 1008.00
 8596 Galvanised  MS  8mm  outer  diameter M-6 dash fastener  25mm long  each 72.00  31.00 2232.00
 8211 40mm SS with plastic rawl plugs  100 nos 1.00  208.00 208.00
 9999 Scaffolding etc.  L.S. 498.65  1.73 862.66
 9977 Carriage of materials etc.  L.S. 237.48  1.73 410.84
 9999 Sundries
LABOUR
 L.S. 310.70  1.73 537.51
 0111 Carpenter 1st class  day 28.00  487.00 13636.00
 0114 Beldar  day 23.00  368.00 8464.00
 

TOTAL
Add 1% Water charges
TOTAL
Add 15% Contractor's profit and overheads
Cost of 100 sqm
Cost of 1 sqm
Say

      125090.01
1250.90
126340.91
18951.114
145292.05
1452.92
1452.90

12.27 GRG (GLASS FIBRE REINFORCED GYPSUM) FALSE CEILING TILES

(DSR ITEM 26.26)

12.27.1 GRG false ceiling tiles

The GRG false ceiling tiles of size 595mm x 595 mm of approved texture, design and pattern and of approved manufacturer, shall be made of Gypsum plaster of 75 microns particle size mixed with short length glass fibre filament of 20 microns ± 5 microns diameter to give it high strength and shall be free from harmful or any toxic ingredients. The GRG false ceiling tiles of the following two types:-

  1. a) Semi perforated 12 mm thick micro tegular edged GRG false ceiling tiles.
  2. b) Fully perforated 12 mm thick micro tegular edged or 10 mm thick square edged GRG false ceiling tiles.

The GRG false ceiling tiles shall be painted with white dispersion type solvent free paint. Fully perforated GRG false ceiling tiles shall have a non-woven fabric of density minimum 30 grams per square meter pasted at the back.

12.27.2 Testing

The GRG false ceiling tiles do not have any surface defect or imperfection having characteristics/specifications as stated below.

  1. Relative Humidity: 99 % relative humidity resistance
  2. Non-combustibility: as per BS 476 Part 4:1970
  3. Light reflectance of 85% (minimum)
  4. NRC (noise reduction coefficient): 0.50 (minimum) for semi perforated and 0.75 (minimum) fully perforated tiles as per IS 8225 – 1987.
  5. Moisture content less than 2%
  6. Density 700 kg/m3 to 850 kg/m3
  7. TC value (Thermal conductivity): 0.08 W/m K.

12.27.3 Frame

All runners of T-Grid system as given below are made of PPGI hot dipped galvanized Iron section (galvanizing @ 120 grams per sqm including both sides) with lower exposed face of 15 mm, precoated with white polyester paint. Perimeter wall angle should be made from 0.40 mm thick galvanized iron with exposed faces precoated with white polyester paint. The T-Grid system should have the following items:

  1. Main-T grid runner with rotary stitches of size 15 x 32 x 0.33 mm and 3000mm long.
  2. Cross-T grid runner with rotary stitches of size 15 x 32 x 0.33 mm and 1200mm long.
  3. Secondary intermediate cross-T grid runner with rotary stitches of size 15 x 32 x 0.33 mm and 600mm long.
  4. Perimeter wall angle of size 24 x 24 x 0.40 mm and 3000mm long.

The frame work shall be executed in such a manner so as to form a grid of 600x600 mm as specified in the nomenclature of item. The frame work shall be suspended from the ceiling by galvanized mild steel items (galvanizing @ 80 grams per sqm) i.e L-shape level adjuster of size 85x25x2mm having cut slit piece for sliding on to the head of main T section and should have hole so as to take the 6mm diameter fully threaded galvanized mild steel hanger rod going through it and locked with check nut. The rod at the other end goes into galvanized mild steel M-6 dash fastener of size 50 mm long and 8 mm outer diameter fixed to the ceiling and locked at ends with check nuts. The lower end of the 6 mm dia hanger rod may be adjusted and locked with check nut to adjust the line and level of the false ceiling.

12.27.4 Suspension Material

The following items are used for suspension of the T Grid frame for laying of false ceiling tiles.

  1. Galvanized mild steel M-6 dash fasteners of 8 mm outer diameter (galvanizing @ 80 grams per sqm), 50 mm long.
  2. Galvanized mild steel 6mm dia fully threaded hanger rod (galvanizing @ 80 grams per sqm), up to 1000 mm long.
  3. Galvanized mild steel L-shape level adjuster (galvanizing @ 80 grams per square meter) of size 85x25x25x2 mm.

The rod shall be used in conjunction with L-shaped level adjuster bent at right angle and check nut, so as to ensure that there is no disengagement both at the bottom of rod and at the top portion which is tightened to M-6 dash fastener drilled into the ceiling slab or beam.

12.27.5 Fixing of frame and false ceiling tiles

The main runners of size 15x32x0.33 mm and 3000 mm long spaced at 1200 mm centers shall be securely suspended with GI fully threaded hanger rod of 6 mm dia and with L-shape level adjuster of size 85x25x25x2mm made from GI sheet. The hanger rod is to be suspended from the soffit at 1200 mm center to center with the aid of M-6 dash fastener suitably drilled into the slab or beam. The last hanger at the end of each main runner should not be greater than 600 mm from the adjacent wall. Then cross-T runner of section 15x32x0.33 mm and 1200 mm length are to be inserted in the main-T runner at 600mm center to center distance at right angles to the main-T runner to form a grid of 600x1200mm modules. The cross-T runner of size 15x32x0.33mm and 600 mm length are then to be centrally inserted in between the longer cross-T runner in direction parallel to the main-T runner so as to form a grid module of 600x600mm. Frame system shall rest on periphery walls/partitions on a perimeter wall angle of pre-coated galvanized iron of size 24x24x0.4mm of 3000mm long with the help of plastic rawl plugs at 450mm center to center distance with 40mm long S.S screws of size in masonry wall/drywall partition and then lay GRG false ceiling tiles of size 595x595 mm in grid including cutting, making opening for services like diffusers, grills, light fittings, fixtures, smoke detectors etc. The ceiling tiles shall be placed over the galvanized iron T-section grid directly without any adhesive or cementing material.

12.27.6 Drawing

12.27.7 Precautions

  1. All the work related to plastering, conduit laying and painting etc to be completed before the false ceiling work is started and the area of false ceiling should be completely dry.
  2. Laying of air conditioning ducts should be completed before the suspension system for false ceiling is started.
  3. All electrical work such as laying of electric cables should in place and completed before start of false ceiling work.
  4. The electrical light fixtures or diffusers etc are to be suspended independently with proper chains, wire and dash fasteners as directed by the Engineer-in-Charge.
  5. All GRG false ceiling tiles shall be provided symmetrically in full size in both directions of the ceiling. The remaining length in both directions should be finished with the proper boxing using GRG sheet or any other suitable material and boxing shall be paid separately.

12.27.8 Measurement

All measurement of the area is to be measured correct to a centimeter.The area shall be calculated in square metre correct to two decimal places. No deductions shall be made for making openings for electrical fitting, air conditioning openings or fire fighting fixtures etc. nor shall extra payment to be made either for the extra materials or labour involved in the making of such openings.

12.27.9 Rates

The rates shall include the cost of all materials and labour involved in all the operations described above including scaffoldings etc. for providing and fixing of false ceiling at all heights.

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